July 28, 1916] 



SCIENCE 



143 



flexible driving shaft, similar to those of the 

 dental engines. 



In work upon the larger specimens the chisel 

 frame is held in the hand, the flexible shaft 

 permitting of considerable freedom in manipu- 

 lation. In the case of smaller specimens, it 

 has been found best to secure the chisel frame 

 in a vise and to hold the specimen in the hand. 

 Putting the chisel in operation consists solely 

 in pressing it against the specimen in the first 

 case, or the specimen against it in the second. 

 Probably of more importance than the speed, 

 is the control of the length of the stroke, and 

 hence of the liability of injury to the specimen. 

 The full stroke is only one fourth of an inch, 

 and by pressing lightly the stroke can be re- 

 duced to an extremely small fraction of an 

 inch. 



William C. Morse 



Washington University 



THE OHIO ACADEMY OF SCIENCE 



In accordance with the amendment of the con- 

 stitution, adopted at the quarter-centennial anni- 

 versary in November, 1915, the twenty-sixth an- 

 nual meeting of the Ohio Academy of Science was 

 held at the Ohio State University, Columbus, Ohio, 

 on Friday and Saturday, April 21 and 22, 1916. 

 Fifty-five members were in attendance. 



The presidential address by Professor George D. 

 Hubbard, of Oberlin College, was on the subject 

 "What Has the Future for Geologists?" On 

 Friday evening a joint session of the academy with 

 the Ohio College Association and other affiliated 

 societies was addressed by Professor Charles H. 

 Judd, of the University of Chicago, on "The More 

 Complete Articulation of Higher Institutions with 

 High Schools. ' ' On Saturday morning the acad- 

 emy adjourned for a symposium of the Ohio Col- 

 lege Association, addressed by representatives of 

 the various affiliated societies. The academy was 

 represented by Professor Lewis G. Westgate, of 

 Ohio Wesleyan University, who spoke on ' ' The Re- 

 lation of the College to Research. ' ' 



The remaining scientific program was as fol- 

 lows: 



archeology 



"Exploration of Tremper Mound," by W. C. 

 Mills. 



BOTANY 



"A New Three-Salt Nutrient Solution for Sand 

 and Water Cultures," by A. G. McCall. 



"An Adjustment of the Sliding Microtome for 

 Cutting Lignified Tissue, ' ' by Forest B. H. Brown. 



"Notes on the Structure and Function of the 

 Green Layer of the Bark of Woody Plants," by 

 Forest B. H. Brown. 



"The Distribution of Fungi in Porto Rico," by 

 Bruce Fink. 



"The Genus Pliyscia in Ohio," by Martha Me- 

 Ginniss, introduced by Bruce Fink. 



"A Relative Score Method for Unmeasured 

 Characters," by A. G. McCall. 



' ' The Revegetation of the Katmai District of 

 Alaska," by Robert F. Griggs. 



"Decrease of Permeability with Age" (Pre- 

 liminary Note), by H. M. Benedict. 



"Methods of Spore Formation in the Zygne- 

 males, " by E. N. Transeau. 



' ' Notes on the Germination of Tree Seeds, ' ' by 

 William R. Lazenby. 



' ' The Quince Leaf -Spot, " by W. G. Stover. 



"A Blade Blight of Corn," by W. G. Stover 

 and W. N. Ankeny. 



"The Occurrence of the Volutella Rot in Ohio," 

 by Gustav A. Meckstroth. 



' ' Observations on the Ontogeny of the Gall 

 of Pachypsylla mama Riley, " by B. W. Wells. 



"Botanizing in Porto Rico," by Bruce Fink. 



"Parthenogenesis in the Dandelion," by Paul 

 B. Sears. 



' ' The Educational Value of Wood Study, ' ' by 



A. B. Plowman. 



"A New Method for Marking Slides," by Paul 



B. Sears. 



"Certain Points in the Celloidin Method" 

 (Demonstration), by A. B. Plowman. 



zoology 



"Parallelism between the Cystid Agelacrinites 

 (fossil) and the Holothurian Psolus (recent), with 

 Demonstrations, ' ' by Stephen R. Williams. 



"The Axial Rotation of Microorganisms and its 

 Evolutionary Significance, " by L. B. Walton. 



"Notes on Ohio Tingitidse," by Carl J. Drake. 



"Insect Population of Grasslands," by Herbert 

 Osborn. 



"Genitalia of the Bedbug with special reference 

 to a Unique Method of Copulation," by P. B. 

 Wiltberger. 



"The Origin of the Gasserian and Profundus 

 Ganglia in Sana-," by Ralph A. Knouff, intro- 

 duced by F. L. Landacre. 



"The Fusion of the Gasserian and Profundus 

 Ganglia in Pletliedon, ' ' by Katharine Okey, intro- 

 duced by F. L. Landacre. 



